In the 20th century, pioneering scientists, journalists and investigators defied convention and began documenting UFOs. Now, with incredible new UFO accounts coming to light, will their work finally culminate in undeniable proof of extraterrestrial visitation?
| Name | Type | Role | |
|---|---|---|---|
| Doug Gordon | Writer | ||
| Max Thompson | Writer | ||
| Erik Pinkston | Writer | ||
| Mitch Marcus | Producer | ||
| Michelle Gorski | Producer | Supervising Producer | |
| Larry Holcombe | Guest Star | Self - Author, The Presidents and UFOs | |
| Jeremy Corbell | Guest Star | Self - Filmmaker, Bob Lazar: Area 51 & Flying Saucers | |
| Mitch Horowitz | Guest Star | Self - Author, The Seeker's Guide to the Secret Teachings of All Ages | |
| Grant Cameron | Guest Star | Self - Author, Presidents and UFOs | |
| Giorgio A. Tsoukalos | Guest Star | Self - Ancient Astronaut Theorist | |
| Kathleen Marden | Guest Star | Self - Dir. of Experiencer Research, MUFON | |
| Linda Moulton Howe | Guest Star | Self - Investigative Journalist, Earthfiles | |
| Nick Pope | Guest Star | Self - U.K. Ministry of Defense (1985-2006) | |
| Bill Birnes | Guest Star | Self - Co-Author, The Day After Roswell | |
| George Knapp | Guest Star | Self - Chief Investigative Reporter, KLAS | |
| David Childress | Guest Star | Self - Author, Technology of the Gods | |
| Paul Hynek | Guest Star | Self - Son of J. Allen Hynek | |
| David Fruehauf | Guest Star | Self - Former SR-71 Pilot | |
| Richard Dolan | Guest Star | Self - Author, UFOs and the National Security State | |
| Joe Lessard | Executive Producer | ||
| Giorgio A. Tsoukalos | Executive Producer | Co-Executive Producer | |
| Susan E. Leventhal | Executive Producer | for HISTORY | |
| Kevin Burns | Executive Producer | ||
| Erik Pinkston | Executive Producer | ||
| David Comtois | Executive Producer | ||
| David Silver | Executive Producer | ||
| Kim Egan | Executive Producer | ||
| Max Thompson | Executive Producer | ||
| Jon A. Levy | Director |